https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95955
W E Brown <webrown.cpp at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |webrown.cpp at gmail dot com
--- Comment #1 from Haoxin Tu <haoxintu at gmail dot com> ---
Add a more readable case
$cat p.c
enum class a : struct{};
template < template <class> class A >
enum class a : union b {};
enum class a { c;}
$g++ p.cc
p.cc:1:23: error: underlying type ‘<unnamed struct>’ of ‘a’ must be an integral
type
1 | enum class a : struct{};
| ^
p.cc:4:12: error: different underlying type in enum ‘enum class a’
4 | enum class a { c;}
| ^
p.cc:1:23: note: previous definition here
1 | enum class a : struct{};
| ^
p.cc:4:16: internal compiler error: tree check: expected integer_type or
enumeral_type or boolean_type or real_type or fixed_point_type, have union_type
in int_fits_type_p, at tree.c:8952
4 | enum class a { c;}
| ^
